You can subscribe to your or any ‘shared’ calendar posted on Google Calendar. An Internet Calendar Subscription keeps your Outlook copy of your Google Calendar updated. Outlook periodically checks the Google Calendar for updates, and if any are found, they are downloaded to the calendar copy in Outlook 2007. While Google Calendar is a phenomenal web application for managing calendars, many use Outlook 2007. The good thing is you can have the best of both worlds by subscribing to your Google Calendar from Outlook.
Use the following steps to do this:
1. Log on to your Google Calendar account.
2. In the left column, under My Calendars, click the arrow button next to the calendar that you want to add to Outlook as an Internet Calendar Subscription.